title: Diffuse photon remission along unique spiral paths on a cylindrical interface is modeled by photon remission along a straight line on a semi-infinite interface.
abstract: We demonstrate that, for a long cylindrical applicator that interfaces concavely or convexly with a scattering-dominant medium, a unique set of spiral-shaped directions exist on the tissue-applicator interface, along which the diffuse photon remission is essentially modeled by the photon remission along a straight line on a semi-infinite interface. This interesting phenomenon, which is validated in steady state in this work by finite-element and Monte Carlo methods, may be particularly useful for simplifying deeper-tissue sensing in endoscopic imaging geometry.
authors.affiliation: School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, USA.
authors.forename: Anqi
authors.initials: A
authors.lastname: Zhang
authors.forename: Daqing
authors.initials: D
authors.lastname: Piao
authors.forename: Gang
authors.initials: G
authors.lastname: Yao
authors.forename: Charles F
authors.initials: CF
authors.lastname: Bunting
authors.forename: Yuhao
authors.initials: Y
authors.lastname: Jiang
mesh_terms: D004058:Diffusion; D008962:Models, Theoretical; D055620:Optical Phenomena; D017785:Photons